Atomizer



y 14,.1940- (1. c. DAGGETT 2,201,029

ATOMIZER Filed Jan. 20, 1938 INVENTOR C/yd? C. flaggeff BY ATTORNEY Patented May 14 1 940 PATENT OFFICE ATOMIZER Clyde 0. Daggett, Toledo, Ohio, assignor to The De Vilbiss Company, Toledo, Ohio, a corporation of Ohio Application January 20, 1938, Serial No. 185,938

2 Claims.

This invention relates to atomizers of the closed type commonly used for spraying perfume, toilet waters, or the like. i

The object of the invention is the provision of a simple and inexpensive construction of atomizer of this character, wherein the usual vent passage for the receptacle opens through a part of the spray-head in adjacent relation to the liquid discharge nozzle, and a cap is provided for cooperation with the head to effectually close both the liquid discharge nozzle and the air vent against leakage therethrough of liquid from the receptacle when the atomizer is not in use.

The invention is fully described in the following specification, and one embodiment thereof illustrated in the accompanying drawing, in which Figure 1 is a perspective view of an atomizer embodying the invention, with the closure cap removed; Fig. 2 is an enlarged central vertical section thereof, with a part in full and with parts broken away; Fig. 3 is an enlarged side elevation, partly in section, of a closure cap adapted for use on the atomizer head, and Fig. 4 is a fragmentary section similar to Fig. 2, with the cap in closing position over the nozzle.

Referring to the drawing,l designates a receptacle for containing a liquid to be sprayed, and having a neck portion 2 to which is secured a ferrule 3 in any suitable manner, as by ce:

ment 4.

The atomizer head 5 has at its bottom a restricted neck portion 6 which is threaded into the ferrule and has a shouldered seat against the marginal edge wall of the ferrule opening, as well understood in the art. The neck portion 6 forms a recess 1 in the head bottom, and the top of the head is provided with an externally threaded cylindrical extension 8 forming the air nozzle of the atomizer, which, in the present instance, is coaxial with said neck portion.

The head 5 is provided therethrough coaxially of the recess 1 and extension 8 with a bore ID, the outer end of which is restricted to provide an air discharge orifice H in said nozzle.

A liquid discharge nozzle I5 is threaded at its inner end into the inner end portion of the bore I0 and has its outer end portion restricted to provide a space therearound within the bore and has its discharge end projecting through the orifice II in spaced relation thereto. It is thus apparent that air discharging from said bore through the orifice II in enveloping relation to the discharge end of the liquid nozzle creates a suction action therethrough, as well understood in the art. A tube I6 projects from the inner end of the nozzle l5 down into the receptacle l to near the bottom thereof and provides communication between the interior of the receptacle and the throat bore of the liquid nozzle.

The wall of the extension 8 without the bore i0 is made sufficiently thick to accommodate a vent passage I 8 which extends outwardly from the socket l at a side of said bore to adapt it to communicate with the interior of the receptacle 10 I, and has its outer end opening through the end of said extension between its outer side edge and the orifice ll.

Air under pressure is supplied to the bore l0 at the inner side of the orifice I I from any suit- 15 able source, as for instance a pressure bulb 20 which has a tubular stem ZI projecting therefrom and threaded into a side passage 22 in the head with its inner end in communication with the bore I0. 20

When the atomizer is not in use, the discharge opening of the liquid nozzle [5 and the vent passage l8 may be entirely closed by a cap 25 which is threaded down over the extension 8 and is provided at the inner end of its socket with a 25 cushion form of sealing member 26, such for instance .as cork, leather, or the like, which, when the cap is screwed home on the extension, closes the discharge opening of the nozzle [5, the surrounding air discharge passage H and the outer 30 end of the vent passage [8, as best shown in Fig. 4. The outer end of the nozzle I5 is preferably projected slightly beyond the outer end surface of the extension 8, so as to insure coaction of the member 26 therewith and a complete closing of the nozzle opening thereby. It is preferable to make the outer end of the extension 8 fiat, so that a fiat disk-form of sealing or gasket member 26 may be provided within the cap for coaction with the nozzles to close the air and vent passage II and I8 of one and the liquid discharge passage of the other.

I wish it understood that my invention is not limited to any specific construction, arrangement or form of the parts, as it is capable of numerous 5 modifications and changes without departing from the spirit of the claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent, is: o

1. In an atomizer of the class described, a liquid receptacle, a spray-head mounted thereon and having an externally threaded portion .at its top side, said head also having a vertical bore and an air vent passage therethrough, the bore 55 terminating at its outer end in a restricted air discharge orifice disposed in the outer end of said portion and said vent passage having its inner end in communication with the receptacle and its outer end opening through said portion between its outer edge and said orifice, a liquid discharge nozzle mounted in the inner end portion of said bore with its discharge end projected through said orifice in spaced relation thereto, the throat of said liquid nozzle being in communication withthe interior of said receptacle near its bottom, means for supplying air under pressure to said bore at a side of said nozzle, and a cap for threading over said head portion and having a yielding sealing member therein for closing coaction with the outer ends of said liquid discharge nozzle and said orifice and vent passage.

2. In. an atomizer of the class described, a liquid receptacle, a spray head mounted thereon and having an externally threaded cylindrical extension at its outer end, said extension having a substantially fiat outer end with an air discharge passage and a vent passage opening therethrough, said passages respectively having communication with a source of air supply and the interior of the receptacle, aliquid discharge nozzle mounted in said head and having its discharge end projecting through and beyond the outer end of said air discharge passage in spaced concentric relation thereto, the throat of said liquid nozzle being in communication with the interior of said receptacle near its bottom, and a cap for threading over said extension and having an interior yielding sealing member for seating on the outer ends of said extension and liquid nozzle to seal said vent and air discharge passages and said nozzle against leakage.

CLYDE C. DAGGETI. 

